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Title: Seasonal and spatial variation in natural densovirus infection in Anopheles minimus s.l. in Thailand
Authors: R. Theophil Rwegoshora
Kathy J. Baisley
Pattamaporn Kittayapong
Mahidol University
National Institute for Medical Research Tanga
Middlesex Hospital London
Keywords: Medicine
Issue Date: 1-Jan-2000
Citation: Southeast Asian Journal of Tropical Medicine and Public Health. Vol.31, No.1 (2000), 3-9
Abstract: We report the first detection of a mosquito densovirus in anophelines, An. minimus species A and species C, and describe temporal and spatial variation in natural densovirus infection. A total of 814 (136 species A; 678 species C) adult mosquitos, obtained over a one year period from human biting catches at three locations in a village in western Thailand, were PCR tested for densovirus infection. Overall infection prevalence did not differ between species (15.4% species A; 14.5% species C). Infection prevalence showed significant seasonal variation. Some spatial heterogeneity in infection was also noted, with timing of peak infection prevalence varying between sites. PCR-screening of An. minimus s.l. larvae found an overall infection prevalence of 18.8%. Larval infection showed a significant positive association with rainfall recorded two months previous to larval collection. Infection in adult mosquitos showed a moderate relationship to environmental variables, but a significant negative correlation with larval infection in the previous month.
ISSN: 01251562
Appears in Collections:Scopus 1991-2000

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